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"and my girl is more successful than you ever will be enjoy the long road downhill disgusting crack head," Prokop wrote, adding, "It's sad @AmandaBynes was a child actress who kids looked up to. Now she's just a lost soul in a plastic face. #gethelp"

But Bynes didn't intend her initial comment as a total diss. "I like her ugly face!" she clarified, adding, "She isn't as pretty as me! You need to put up two comparable professional photos! She's not a model I am!!!"

The former All That star wasn't pleased with the photo selection and tweeted, "also new pics because surgery helps me! I need more to make my nose smaller! I'll put our pics side by side to prove my point!"

Prokop once again tweeted Bynes, writing, "you aren't a model you are plastic. Nothing about you is real anymore. It's so sad how blind you are to reality." And "stop getting work. You were beautiful. Me and Sarah looked up to you. Now you are looking more like a pornstar. #itssad"

Your information may be shared with other NBCUniversal businesses and used to better tailor our services and advertising to you. For more details about how we use your information, see our Privacy Policy. If you are located outside of the U.S., your information may be transferred to, processed and used in the U.S.